$\lim_{x\to0}\left(\frac{3x^2+9x-1}{3x}\right)$

$\int2ln\left(\sqrt[3]{x}\right)dx$

$\lim_{x\to5}\left(\frac{\sqrt[5]{x}-\sqrt[5]{5}}{x-5}\right)$

$\frac{d}{dx}e^y\:+\:28\:-e^{-2\:}=\:3x^2\:+\:4y^2$

$\int\:\frac{5x^2-4}{x^2\left(x+2\right)}dx$

$x^2-2x-12$

$x+\frac{6}{8}x+\frac{54}{64}$